Circles
What is the diameter of a circle that has a radius of 3m?
The diameter is 6m
Find the simple interest on $800 at 4.25% for 6 years
$204
Adrian works in New York City and makes $42 per hour. She works in an office and must get her suit dry cleaned every day for $75. If she wants to make more than $260 a day, at least how many hours must she work?
Inequality: 42x-75>260
+75 +75
42x >335
x>7.97
3<-5n+2n
n<-1
2(x + 7) = 48
x=17
Find the area of the circle with a diameter of 14 inches. Round your answer to the nearest tenth.
A=153.9 square inches
What would the final balance be if I put $650 in the bank for 60 months with an interest rate of 6%?
$845
Your brother has $2,000 saved for a vacation. His airplane ticket is $637. Write and solve an inequality to find out how much he can spend on everything else.
inequality: s+637 <2000
-637 -637
s<1,363
* less than or equal to sign
-p-4p>-10
p<2
3(x + 5) -2=40
x=9
What is the area of a circle who has a circumference of 62.8 m? Round your answer to the nearest hundredth.
A=314.16 m^2
What is the interest earned on $350 invested after 4 years, with a 5% simple interest?
$70
Sandra scores 4 baskets in his first basketball game. She then scored the same number of baskets in each of her next 3 games. If Sandra made 19 baskets total, how many baskets did she score in each of the three games?
4+3x=19
x=5 baskets
9>-2m+2-3
m>-5
x-6+ 6=15
x=15
The distance around the wheel of a truck is 9.42 feet. What is the diameter of the wheel? Round to the nearest whole number.
D=3 ft
Mark took out a loan for $24,000 for college. The interest rate on the loan was 8%. Mark paid off the loan in 5 years. How much did he pay altogether?
$33,600
The Elk Grove Bowling Alley offers a special. Each game costs $2.50, and shoe rental $2. You spend $14.50 total. How many games did you bowl? Write & Solve the equation.
2.50g+2=14.50
g=5 games
6-4(6n+7)>122
n<-6
3x + 9 – 2 +2x +5 = 37
x=5
The circumference of a circle is 40.84 cm. What is the area of the circle? Round to the nearest tenth.
A=153.9 cm^2
Joyce took out a small loan of $1,200. The interest rate on the loan was 10.5%, but she paid it off in just 18 months. How much did she pay back in interest?
$189
The quotient of a number and 15 is no greater than 450. What are the possible values for the number?
x/15 is less than or equal to 450
x is less than or equal to 6,750
-3-6(3x+6)>-3
x<-2
3(x – 3 ) – 2(x + 6) =62
x=83